Patent WO-2011087198-A2 (WO)
Title: Stirling engine assembly
Inventor: SEO SANG DUCK
IPC: F02G1/043
Filed: 2010-08-25
Abstract: According to the invention of figure 1 in the present invention, a stirling engine having the number of four cylinders has a gas transfer cylinder (15) which moves gas to induce thermal expansion and cryogenic contraction and a power generation cylinder (16) which is connected to the coaxial. The gas transfer cylinder (15) is connected to the power generation cylinder (16) of a next engine sequentially and repeatedly in the rotation direction of an engine output shaft, forms z-type crank shaft (12) by applying angular displacement within a range of 15° to 40° from the center of an output shaft (6) in the direction of the output shaft, and combines an x or * type reciprocating arm (13) and a connecting rod (14) to the z-type crank shaft. The gas transfer cylinder uses a bearing for the friction section of each unit so as to have the structure of a z-type crank apparatus which converts reciprocating motion to rotary motion. According to the present invention, the stirling engine having two or more of the number of multiple cylinders has the circulation path of working gas of which expansion and contraction is crossed respectively and conversely, and performs relative heat exchange that warmness and coolness is crossed successively in different directions with a method for exchanging the heat of the other device of a counterpart in contrast to each existing independent heat exchange method. The stirling engine has the structure of a relative heat exchange (1) which increases efficiency of heat with a principle that the heat of the opposite side is additionally added in expansion and heat is taken by the opposite side in contraction. A plurality of heat pipes (4) are installed to pass through the heat circulation path of the counterpart inside of the heat exchanger (1) for performing successive heat transfer classified. As the heat exchange material (10) of the heat exchanger (1) used as the sub materials of heat exchange means, nonferrous metal materials such as copper, stainless, aluminum and titanium having fast thermal conduction characteristics are manufactured into a steel scrubber shape. The heat exchanger of the present invention has the circulation path of working gas which is conversely crossed, and performs relative heat exchange in which warmness and coolness is successively crossed in different directions with a method for exchanging the heat of the other device of the counterpart in contrast to each existing independent heat exchange method. The stirling engine has the structure of the relative heat exchange (1) which increases efficiency of heat with the principle that the heat of the opposite side is additionally added in expansion and heat is taken by the opposite side in contraction. The plurality of heat pipes (4) is installed to pass through the heat circulation path of the counterpart inside of the heat exchanger (1) for performing successive heat transfer classified. As the heat exchange material (10) of the heat exchanger (1) used as the sub materials of heat exchange means, nonferrous metal materials such as copper, stainless, aluminum and titanium having fast thermal conduction characteristics are manufactured into a steel scrubber shape. According to the stirling engine of the present invention, a stirling engine assembly shares the case (7) of a power converting unit except a heating unit, a heat exchange unit, and a cooling unit, withdraws an output shaft (6) through a high-pressure seal retainer (8) with the sealed inside of the space of the power converting unit, is sealed with a generator (9) inside of the case (7) of the power converting unit, or seals the generator and the case of the power converting unit by coupling the generator to the withdrawn output shaft and assembling the sealed generator case to the crank case (8) of the power converting unit.